YZ / WR 2007		YZ / WR 2007
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2007 Yamaha YZ and WR Models
We traveled to Vegas to see the bikes
 YZ125 YZ250 YZ250F YZ450F - Changed for 2007
 WR250F WR450F - All new with aluminum frame for 2007

2007 Yamaha YZ and WR Models Released
2-strokes remain with some changes, YZ 4-stroke models get some great changes and the all-new WR line now sports an aluminum frame.

(click this image for a huge full screen image)

Below:
YZ450F
YZ250F
YZ250
YZ125
WR450F
WR250F

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4-STROKE - 2007 Yamaha YZ450F

CHANGES FOR 2007

• New upper cast triple clamp with a light and strong forging to slightly reduce steering head rigidity. Uses  lighter weight outer fork tubes, lighter wheel rims and light wave-type brake rotors tp provide more accurate and responsive steering.

• Increased the length of the rear shock by 1.5mm to place more focus on the front end to sharpen handling. Replaced steel damping adjusters with aluminum ones to remove more weight from the four-way adjustable, titanium sprung rear suspension unit. 

• Other mass-centralization measures include the use of a lighter rear axle and adjusters. More than 50 fasteners throughout the bike have been replaced with lighter weight hardware.

• The engine’s balancer ratio was revised for improved power delivery and handling. Exhaust valve lift is increased for optimal overlap and more power across the power band, along with corresponding jetting and ignition modifications.

• A more rigid clutch pressure plate helps put power to the ground and dissipates heat more efficiently, especially during partial clutch operation. Shorter lever stroke with 12-percent reduced effort means instant response.

• New, titanium exhaust pipe fattens low- and mid-range power while simultaneously adhering to 2007 AMA noise regulations.

• This year’s ProTaper aluminum handlebar bend raises the grips a bit for an expanded cockpit. Forged bar clamps reduce weight for superior handling.

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ENGINE

• 449cc, five-valve, DOHC, liquid-cooled engine is super-powerful yet tractable.

• 39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) and leak jet delivers precise fuel/air mixture and instant throttle response.

• Revised CDI ignition keeps that broad and deep powerband hard-hitting, yet controllable.

• Lightweight titanium valves and load-reduced springs minimize reciprocating mass for fast-revving, hard-hitting power delivery across the rev range.

• Additional weight-saving engine features include: small-design cam chain tensioner and oil pump, aluminum oil hose, all-titanium exhaust header, flange, bracket and heat shield and light CDI ignition unit.

• Primary kickstarting with automatic decompression and convenient handlebar-mounted hot start lever ensures easy restarts. A new kick start lever provides efficient starting, hot or cold.

• Kick pinion gear is separate from the primary driven gear for smoother clutch engagement.

• Large-capacity radiator is reinforced for greater strength.

CHASSIS/SUSPENSION

• Extensively tested aluminum frame uses a mix of alloy castings, forgings and extrusions to produce a tuned-flex frame.

• Speed-Sensitive System 48mm Kayaba fork places transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed: Eliminating mid-stroke damping force changes provides a smoother, more precise ride.

• Titanium-sprung four-way adjustable rear shock with Kashimacoated internals reduces friction for better compliance and handling.

• More weight savings come via two-piece (part aluminum, part plastic) engine protector plates and thin-walled engine guard construction.

Model Engine Type Bore x Stroke Compression Ratio Carburetion Ignition Transmission Final Drive Suspension/Front Suspension/Rear Brake/Front Brake/Rear Tire/Front Tire/Rear Seat Height Wheelbase Ground Clearance Fuel Capacity Dry Weight Color MSRP

YZ450FS 449cc liquid-cooled, DOHC 4-stroke w/5 titanium valves 95mm x 63.4mm 12.3:1 39mm Keihin FCR flat-slide w/throttle position sensor Digital CDI Constant-mesh 5-speed #520 chain 48mm Kayaba inverted telescopic fork w/adjustable compression and rebound damping; 11.8" travel Kayaba single shock w/adjustable preload, compression and rebound damping & separate hi/lo-speed compression adjuster;  12.4" travel Disc, wave-type rotor Disc, wave-type rotor 80/100-21 51M Dunlop 110/90-19 62M Dunlop 86.3" x 32.1" x 51.1" 38.8" 58.9" 14.6" 1.85 gal N/A Team Yamaha Blue/White; White/Silver $6,999

 

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4-STROKE - 2007 Yamaha YZ250F
The 2007 250F receives lots of changes including an engine placed more upright to place more weight towards the center of mass. The exhaust is quieter to meet AMA race standards, engine settings have been altered to complement the new exhaust.

CHANGES FOR 2007

• Carburetion, ignition and other modifications provide more top-end performance and over-rev ability.

• The engine mounting angle has been changed; rotating the cylinder head rearward changes the balance of the machine for compactness and sharp handling. Smaller engine mounting bolts and other things reduce weight by 2.5 pounds.

• Steering head moved 3mm back to make the bike super nimble for turning into tight corners and for carving tight lines.

• Replaced the upper cast triple clamp with a light and strong forging, slightly reducing steering head rigidity. Bike uses lighter outer fork tubes, lighter wheel rims and light wave-type brake rotors to assist in super-accurate, super-responsive steering. A new front axle bracket saves weight.

• A lighter front brake caliper and master cylinder with smaller pistons saves weight; a new front brake lever gives excellent  feel. The result is outstanding braking power and less unsprung front-end weight.

• Increased the length of the rear shock by 1.5mm to place more focus on the front end to sharpen handling. Replaced steel damping adjusters with aluminum ones to remove more weight from the four-way adjustable, titanium sprung rear suspension unit. Adopted YZ250-style rear linkage to save weight and increases strength.

• Other mass-centralization measures include a lighter rear axle and adjusters. More than 50 fasteners throughout the  bike have been replaced with lighter ones.

• New exhaust pipe works with engine changes to boost top-end response while adhering to more quiet 2007 AMA noise regulations.

• This year’s ProTaper aluminum handlebar bend raises the grips a bit for an expanded cockpit feel. Forged bar clamps reduce weight for superior handling.

ENGINE

• Liquid-cooled, 249cc, five-titanium-valved, DOHC, four-stroke is powerful and highly tractable, with a 13,500-rpm redline for broad, competition-crushing pulling power.

• 37mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) ensures precise fuel/air mixing and lightning-quick throttle response.

• CDI ignition provides a hot, consistent spark across the powerband for quick throttle response.

• Light, dished forged piston reduces reciprocal mass and friction for fast revving and excellent durability.

• Lightweight titanium header pipe (with titanium heat shield) flows into a new aluminum silencer for maximum power.

• Cylinder body and crankcase feature a large cut-away section to reduce pumping loss and increase mid-range performance.

• Primary kickstarting (with automatic decompression and convenient handlebar-mounted hot start lever) ensures easy restarts, and a new kickstart lever provides better leverage.

• Slick, five-speed transmission with heavy-duty multi plate clutch features an involute spline set-up - ensures smooth shifting and quick hook-up under power.

• Magnesium cylinder head cover helps shave weight.

• Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.

• The dry sump oil tank now has an internal partition for better oil flow, and revised oil lines reduce weight.

CHASSIS/SUSPENSION

• Extensively tested aluminum frame uses a mix of alloy castings, forgings and extrusions to produce a tuned-flex frame. Speed-Sensitive System 48mm Kayaba fork places transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed: Eliminating mid-stroke damping force changes provides a smoother, more precise ride.

• Titanium-sprung four-way adjustable rear shock with Kashima coated internals reduces friction for fantastic compliance and great handling.

• Removable aluminum rear subframe constructed of square section  tubing for light weight and easy maintenance—lighter fasteners for 2007 enhance weight distribution and handling.

• Lightweight front wheel hub for reduced unsprung weight and increased durability.

• Lightweight front and rear brake calipers with aluminum pistons and anti-bubble front master cylinder; new wave-style rotors reduce unsprung weight and deliver strong stopping power with progressive feel.

• Premium Dunlop knobbies provide competition-spec traction and great wear.

• Lightweight 21-inch front and 19-inch rear Excel rims are exceptionally durable and reduce unsprung weight.

ADDITIONAL FEATURES

• “Gripper” style seat cover offers excellent feel and control.

• Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.

• Cleated rear brake lever and folding shift lever tip offer superb grip and excellent durability.

• Stainless steel clutch cable for longer life.

Model Engine Type Bore x Stroke Compression Carburetion Ignition Transmission Final Drive Suspension/Front Suspension/Rear Brake/Front Brake/Rear Tire/Front Tire/Rear L x W x H Seat Height Wheelbase Ground Clearance Fuel Capacity Dry Weight Color MSRP

YZ250FS 249cc liquid-cooled, DOHC 4-stroke w/5 titanium valves 77mm x 53.6mm 12.5:1 37mm Keihin FCR flat-slide w/throttle position sensor Digital CDI 5-speed w/multiplate wet clutch #520 chain 48mm Kayaba inverted cartridge fork w/adjustable compression and rebound damping; 11.8" travel Kayaba single shock w/adjustable preload, compression and rebound damping & separate hi/lo-speed compression adjuster; 12.4" travel Disc, wave-type rotor Disc, wave-type rotor 80/100-21 51M Dunlop 100/90-19 57M Dunlop 85.7" x 32.1" x 50.9" 38.7" 58.5" 14.5" 1.85 gal N/A Team Yamaha Blue/White; White/Silver $6,149

 

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2-STROKE - 2007 Yamaha YZ250
CHANGES FOR 2007

• Modified thickness of both inner and outer fork tubes and revised damping settings. 

• Rear shock lightened by the use of aluminum components. Revised settings complement the changes in the fork.

• A lightweight and strong Pro Taper aluminum handlebar in adjustable mounts adds comfort and control. 

• New jet needle in the 38mm Keihin PWK  carburetor increases bottom-end and mid-range response.

• Lighter box-head bolts are used throughout the chassis to ease maintenance and reduce weight.

ENGINE:

• 249cc liquid-cooled, reed valve-inducted two-stroke engine with wide and hard hitting power band.

• Patented YPVS Power valve system combines for crisp hard-hitting bottom-end acceleration, strong midrange and eye-opening top-end power.

• Special-design carbon fiber reed-valve petals improve throttle response and engine performance across the entire rpm range.

• Smooth-shifting, 5-speed, close-ratio transmission with a heavy-duty multiplate clutch.

• Primary kickstarter ensures smooth, easy starting action and reduced weight.

• Large-capacity radiator features a ten row core with four louvers for maximum cooling efficiency.

• 38mm Keihin PWK carburetor with power jet and throttle position sensor (TPS) ensures precise fuel/air mixing and crisp throttle throughout the powerband.

• Digital CDI ignition system delivers  precise spark for faster and stronger response anywhere the powerband.

• Works-style clutch lever features race-spec barrel adjuster.

CHASSIS/SUSPENSION

• A carefully engineered, advanced aluminum frame and swingarm give the YZ250 great handling.

• Speed-Sensitive System 48mm Kayaba fork tubes move the transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed instead of position. Along with a bigger base valve hole, the result is a smooth ride and super-precise handling.

• Removable aluminum rear subframe constructed of square-section tubing for reduced weight.

• Rear, fully adjustable Kayaba shock features a super-light titanium shock spring and reduced-friction Kashima coating of internals. 12.4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort all add up to fantastic rear wheel control and a sweet ride.

• Lightweight front and rear calipers with aluminum pistons and anti-bubble front master cylinder, 250mm fully floating front and 245mm rear discs, deliver strong stopping power with progressive feel.

• Lightweight 21-inch front and 19-inch rear Excel rims provide  exceptional durability and help reduce unsprung weight for optimal suspension performance and handling.

• Tapered rear wheel spacers ease sliding the rear wheel into place, for quicker tire changes.

• Premium Dunlop knobbies offer race-spec traction and wear.

ADDITIONAL FEATURES

• Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.

• Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low handlebar provide excellent movement and more comfortable ergonomics for riders.

• Wide-diameter fuel tank cap ensures easier usage, while larger tank opening means faster, hassle-free refueling.

• Cleated rear brake lever and folding shift lever tip offer superb grip.

• Repackable exhaust silencer.

• Stainless steel clutch cable for longer life.

Model Engine Type Bore x Stroke Compression Carburetion Ignition Transmission Final Drive Suspension/Front Suspension/Rear Brake/Front Brake/Rear Tire/Front Tire/Rear Seat Height Wheelbase Ground Clearance Fuel Capacity Dry Weight Color MSRP

YZ250W1 249cc liquid-cooled, reed valve–inducted 2-stroke 66.4mm x 72mm 9.2–10.9:1 38mm Keihin PWK w/power jet & throttle position sensor Digital CDI 5-speed w/multiplate wet clutch #520 Chain 48mm Kayaba inverted cartridge fork  /adjustable compression and rebound damping; 11.8" travel Kayaba single shock w/adjustable preload,  compression and rebound damping & separate  hi/lo-speed compression adjusters; 12.4" travel 250mm floating disc 245mm disc 80/100-21 51M Dunlop 110/90-19 62M Dunlop 39.1" 58.3" 15.0" 2.1 gal 211 lb Team Yamaha Blue/White $6,299 (available June 2006)

 

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2-STROKE - 2007 Yamaha YZ125
CHANGES FOR 2007

• Modified thickness of both inner and outer fork tubes. Revised damping settings provide great bump absorption while shaving weight.

• Rear shock lightened by the use of aluminum components. Revised settings complement the changes in the fork.

• A light and strong ProTaper aluminum handlebar is set in adjustable clamps for added comfort and a better feel.

• Revisions to the ignition map and silencer boost low-end and mid-range performance.

• Platinum spark plug is super-durable.

• Lighter box-head bolts are used throughout the chassis to ease maintenance and reduce weight.

ENGINE

• Compact 124cc reed valve-inducted two-stroke, with highly efficient straight intake and exhaust tracts.

• Patented YPVS™ power-valve system helps provide crisp, hard-hitting bottom-end acceleration with strong mid-range and top end.

• 38mm Mikuni TMX carburetor gives excellent throttle response.

• Six-speed close-ratio transmission with optimized gear ratios for maximum performance.

• Digital CDI ignition system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.

• Large-capacity radiator features a 10-row core with four louvers to deliver maximum cooling efficiency.

• Primary kickstarting ensures easy restarts in any gear.

• Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.

CHASSIS/SUSPENSION

• A carefully engineered, advanced aluminum frame and swingarm give the YZ125 great handling.

• Speed-Sensitive System 48mm Kayaba fork tubes move the transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed instead of position.

• Removable aluminum rear subframe constructed of square-section tubing for reduced weight.

• Fully adjustable Kayaba shock features a super-light titanium spring and reduced-friction Kashima coating inside. 12.4 inches of travel, separate adjusters for high and low speed. 

• Lightweight front and rear calipers with aluminum pistons and anti-bubble front master cylinder, 250mm fully floating front and 245mm rear discs, deliver strong stopping power with progressive feel.

• Lightweight 21-inch front and 19-inch rear Excel rims provide durability and help reduce unsprung weight for optimal suspension performance and handling.

• Tapered rear wheel spacers ease sliding the rear wheel into place.

• Dunlop knobbies offer race-spec traction and wear.

ADDITIONAL FEATURES

• Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low ProTaper handlebar all help create greater freedom of movement and more comfortable ergonomics for riders.

• Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.

• Wide-diameter fuel tank cap for easier refueling.

• Cleated rear brake lever and folding shift lever tip offer superb grip and durability.

• Repackable exhaust silencer.

• Stainless steel clutch cable for longer life.

Model Engine Type Bore x Stroke Compression Carburetion Ignition Transmission Final Drive Suspension/Front Suspension/Rear Brake/Front Brake/Rear Tire/Front Tire/Rear Seat Height Wheelbase Ground Clearance Fuel Capacity Dry Weight Color MSRP

YZ125W1 124cc liquid-cooled, reed valve–inducted 2-stroke 55mm x 54.5mm 8.6:1–11.0:1 38mm Mikuni TMX Digital CDI 6-speed w/multiplate wet clutch #520 chain 48mm Kayaba inverted cartridge fork w/adjustable compression and rebound damping; 11.8" travel Kayaba single shock w/adjustable preload, compression and rebound damping & separate hi/lo-speed compression adjusters;  12.4" travel 250mm floating disc  245mm disc 80/100-21 51M Dunlop 100/90-19 57M Dunlop 39.25" 56.8" 15.2" 2.1 gal 189 lb Team Yamaha Blue/White $5,499 (available June 2006)

 

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2007 Yamaha WR450F

• A YZ-bred advanced aluminum frame, carefully engineered from castings, forgings and extrusions—enhances handling while retaining Yamaha feel and characteristics.

• Now there’s even more controllable power flowing from the five-titanium valve, 11,000 rpm engine, and it starts with the push.

• Digital enduro computer offers speedometer, clock, tripmeter, etc., in basic mode—or use management functions such as timer, distance compensating tripmeter, average speed.

• The WR450F is green sticker approved for California.

ALL NEW FOR 2007:

ENGINE:

• 449cc liquid-cooled, DOHC four-stroke with five titanium valves delivers more broad power than ever. New engine has high over-rev capacity and crisp, linear throttle response.

• Changing the cylinder mounting angle to a more vertical position in the new frame provides excellent overall machine balance by placing more weight to the center..

• Revised camshafts, carburetion, intake ports, exhaust, etc., all work together to produce an engine with even more low and mid-range power.

• New crank with revised balance factor and new AC generator provides smoother running. Strong new connecting rod and piston oil-jet for increased cooling and long life.

• New, dry sump lubrication system carries the oil reservoir inside the engine cases, for excellent mass centralization and simplified plumbing.

• 39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) produces ultra-precise fuel/air mixing and quick throttle response.

• New “no tools” airbox adopts hinge-type quick-open lid. Battery rides 8mm lower than before for improved handling.

• Digital CDI ignition system delivers more precise spark and monitors engine speed to ensure optimal timing for fast, strong response.

• New, bigger radiators with reinforcements ensure maximum cooling efficiency with greater strength.

• Wide-ratio five-speed transmission uses strengthened gears and YZ450F-spec multi plate clutch - good for quick-hitting power in the woods as well as eye-opening top-end power.

• New kickstarter features a strengthened ratchet mechanism. The electric starting remains.

• Lightweight exhaust system maximizes engine power and allows hassle-free replacement of oil filter.

• Aluminum muffler with USFS-approved spark arrestor.

• Works-style clutch lever features oversize barrel adjuster for easy, on-the-fly adjustability.

CHASSIS/SUSPENSION:

• All-new YZ-inspired aluminum frame helps reduce weight while optimizing mass centralization. An extensively tested assembly of aluminum forgings, castings and extrusions. The new WR frame retains Yamaha handling and responsiveness.

• Removable aluminum rear subframe constructed of square-section tube for reduced weight.

• Fully adjustable air/oil-separate 48mm fork tubes deliver precise, fade-free handling; fork protectors provide excellent tube protection.

• Tapered swingarm adopts YZ-style linkage for controlled, compliant rear suspension action. Revised axle and holders reduce weight in a critical area.

• The Kayaba shock provides 12.0 inches of travel with adjusters for high- and low-speed compression damping, rebound and spring preload—and features a larger piggyback reservoir for excellent damping and fade resistance.

• New, wave disc brake rotors front and rear reduce unsprung weight and provide excellent performance. Front and rear calipers with aluminum pistons deliver strong stopping power with progressive feel.

• Lightweight 21-inch front and 18-inch rear Excel rims provide exceptional durability and help reduce unsprung weight for optimal suspension performance.

• Premium Dunlop knobbies.

ADDITIONAL FEATURES:

• Sharp new YZ-derived bodywork, new engine covers and a new thicker seat look great and is more comfortable on long rides.

• ProTaper aluminum handlebar in forged triple clamp shaves weight and increases comfort.

• Slim design lightweight fuel tank holds 2.1 gallons.

• One-piece, high strength, plastic skid plate shaves weight and offers full protection.

• Lightweight, 35-watt headlight and small LED taillight maximize visibility and draw less current.

• Adjustable front brake lever.

• 5mm wider, super wide,  footpegs are also lower for more comfort.

• Cleated rear brake lever and folding shift lever tip offer superb grip and excellent durability.

• Repackable aluminum muffler shaves weight.

• Front wheel collar makes front wheel removal quick and easy.

 

Model Engine Type Bore x Stroke Compression Carburetion Ignition Transmission Final Drive Suspension/Front Suspension/Rear Brake/Front Brake/Rear Tire/Front Tire/Rear Seat Height Wheelbase Ground Clearance Fuel Capacity Dry Weight Color MSRP

WR450FW 449cc liquid-cooled, DOHC 4-stroke w/5 titanium valves 95mm x 63.4mm 12.3:1 39mm Keihin FCR flat-slide w/throttle position sensor Digital CDI Wide-ratio, 5-speed w/multiplate wet clutch #520 O-ring chain 48mm Kayaba inverted telescopic fork w/adjustable compression  and rebound damping; 11.8" travel Kayaba single shock w/adjustable preload, compression and  rebound damping & separate hi/lo-speed compression adjuster;  12.0" travel Disc, wave-type rotor Disc, wave-type rotor 80/100-21 Dunlop 110/100-18 Dunlop 38.0" 58.5" 14.6" 2.1 gal 249 lb Team Yamaha Blue/White $7,199

 

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2007 Yamaha WR250F
All new for 2007, the WR line receives a new aluminum frame based on that of the YZ line.

• A YZ-bred advanced aluminum frame—carefully engineered from castings, forgings and extrusions—enhances handling while retaining legendary Yamaha feel and characteristics.

• Now there’s even more controllable power flowing from the high-revving five-titanium-valve engine—and it starts with the push of a button.

• Cool, digital enduro computer offers speedometer, clock, tripmeter, etc., in basic mode—or pace management functions such as timer, distance compensating tripmeter, average speed, etc., when switched to race mode. The WR250F is green sticker approved for California.

ALL NEW FOR 2007:

ENGINE:

• 249cc liquid-cooled, DOHC four-stroke with 5 titanium valves delivers more low- and mid-range power than ever, with high over-rev capacity and crisp, linear throttle response.

• Revised camshafts, carburetion and TPS tuning, new exhaust and ignition systems work together to produce a quick-revving engine with even more low- and mid-range power.

• 37mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) ensures ultra-precise fuel/air mixing and lightning-quick throttle response.

• Closer transmission ratios in the five-speed gearbox reduce rpm drop between gears, especially up into 4th and 5th.

CHASSIS/SUSPENSION:

• All-new YZ-inspired aluminum frame helps reduce weight while optimizing mass centralization. An extensively tested assembly of aluminum forgings, castings and extrusions. The new WR frame retains legendary Yamaha handling and response.

• Removable aluminum rear subframe constructed of square-section tube for reduced weight.

• Fully adjustable air/oil-separate 48mm fork tubes deliver precise, fade-free handling; fork protectors provide excellent tube protection.

• Tapered swingarm adopts YZ-style linkage for controlled, compliant rear suspension action. Revised axle and holders reduce weight in a critical area.

• The Kayaba shock provides 12.0 inches of travel with adjusters for high- and low-speed compression damping, rebound and spring preload—and features a larger piggyback reservoir for excellent damping and fade resistance.

• New, wave disc brake rotors front and rear reduce unsprung weight and provide excellent performance. Front and rear calipers with aluminum pistons deliver strong stopping power with progressive feel.

• Lightweight 21-inch front and 18-inch rear Excel rims provide exceptional durability and help reduce unsprung weight for optimal suspension performance.

• Premium Dunlop knobbies.

ADDITIONAL FEATURES:

• Cool new YZ-derived bodywork, new engine covers and a thick new seat look great and feel excellent on long rides.

• ProTaper aluminum handlebar in forged triple clamp shaves weight and increases comfort.

• 5mm-wider footpegs are also lower for more comfort.

• Slim design lightweight fuel tank holds 2.1 gallons.

• One-piece, high strength, plastic skid plate shaves weight and offers great protection.

• Lightweight, 35-watt headlight and small LED taillight maximize visibility and draw less current.

• Adjustable front brake lever.

• Repackable aluminum muffler shaves weight.

• Front wheel collar makes front wheel removal quick and easy.

Model Engine Type Bore x Stroke Compression Carburetion Ignition Transmission Final Drive Suspension/Front Suspension/Rear Brake/Front Brake/Rear Tire/Front Tire/Rear Seat Height Wheelbase Ground Clearance Fuel Capacity Dry Weight Color MSRP

WR250FW 249cc liquid-cooled, DOHC 4-stroke w/5 titanium valves 77mm x 53.6mm 12.5:1 37mm Keihin FCR flat-slide w/throttle position sensor Digital CDI Wide-ratio, 5-speed w/multiplate wet clutch #520 O-ring chain 48mm Kayaba inverted telescopic fork w/adjustable compression and rebound damping; 11.8" travel Kayaba single shock w/adjustable preload, compression and rebound damping & hi/lo-speed compression adjuster; 12.0"  travel Disc, wave-type rotor Disc, wave-type rotor 80/100-21 Dunlop 100/100-18 Dunlop 38.4" 58.1" 14.6" 2.1 gal 235 lb Team Yamaha Blue/White $6,399

 

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 YZ125 YZ250 YZ250F YZ450F - Changed for 2007
 WR250F WR450F - All new with aluminum frame for 2007

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